Bioactive biodegradable films are emerging biomaterials in the food packaging field. This study aims to investigate the effect of different Cenostigma nordestinum extracts (leaves, bark, and exudate bark) on the antioxidant, antimicrobial, and some physicochemical properties of chitosan films. Different concentrations of the extracts were added to the film matrix and the resulting incorporated films were evaluated for their bioactive, optical, mechanical, and water vapor barrier properties. The extracts of C. nordestinum proved to be natural sources of promising bioactive compounds with good antioxidant and antimicrobial properties. The films incorporated with C. nordestinum extracts were opaquer, more resistant to tension, and less permeable to water vapor when compared to chitosan-control films. The incorporation of 300 µg mL⁻¹ of the bark extract in the chitosan film increased the tensile strength from 113.97 ± 0.42 to 164.82 ± 0.85 MPa, and reduced the water vapor permeability from 2.11 ± 0.02 to 1.51 ± 0.04 × 10⁻¹⁰ g (m s Pa)⁻¹. Additionally, the incorporated films presented excellent antioxidant capacity and discrete antimicrobial activity. The ongoing results demonstrate that bioactive chitosan-films incorporated with different C. nordestinum extracts are quite promising for the production of ecologically sustainable packaging for the food industry.

生物活性可生物降解薄膜是食品包装领域新兴的生物材料。本研究旨在研究不同Cenostigma nordestinum提取物（叶子、树皮和渗出树皮）对壳聚​​糖薄膜的抗氧化、抗菌和一些理化特性的影响。将不同浓度的提取物添加到薄膜基质中，并评估所得掺入薄膜的生物活性、光学、机械和水蒸气阻隔性能。C. nordestinum的提取物被证明是具有良好抗氧化和抗菌特性的有前途的生物活性化合物的天然来源。与C. nordestinum合并的薄膜与壳聚糖对照薄膜相比，提取物更不透明，更耐张力，对水蒸气的渗透性更差。在壳聚糖薄膜中加入 300 µg mL ^-1的树皮提取物后，拉伸强度从 113.97 ± 0.42 增加到 164.82 ± 0.85 MPa，水蒸气渗透率从 2.11 ± 0.02 减少到 1.51 ± 0.04 × 10 ^-10  g ( ms Pa) ^-1。此外，掺入的薄膜表现出优异的抗氧化能力和离散的抗菌活性。正在进行的结果表明，与不同的C. nordestinum提取物结合的生物活性壳聚糖薄膜对于为食品工业生产生态可持续的包装非常有希望。